package string;

public class StringDemo {
    public static void main(String[] args) {
        String s1 ="123abc";
        String s2 = "123abc";
        String s3 = "123abc";
        System.out.println(s1==s2);
        System.out.println(s1==s3);
        String s4 = new String("123abc");
        System.out.println(s4==s1);
        String s5 = "123"+"abc";
        System.out.println(s5==s1);
        String s6 = "123abc";
        String s7 = new String("123abc");
        System.out.println(s6==s7);
        System.out.println(s6.equals(s7));

    }
}
